Over a dozen ISIS terrorists were arrested this week after the slaughter of two female Scandinavian hikers in Morocco.

ISIS beheaded one of the women and posted the video online.

MORE ARRESTS: Over a DOZEN jihadis arrested in BEHEADINGS of 2 young women tourists, tens of thousands more Islamic State Muslims gloat, share video, images.: They sent the clip to Ms Jespersen's friends'. Gruesome images were also posted on Ms Ueland's… https://t.co/4SrFW9AmCIpic.twitter.com/vcuSiLLMCZ